Ternopil Ivan Pul'uj National Technical University

About: Ternopil Ivan Pul'uj National Technical University is a based out in . It is known for research contribution in the topics: Deformation (engineering) & Fracture toughness. The organization has 134 authors who have published 187 publications receiving 1019 citations.

Study of selected properties of thermally sprayed coatings containing WC and WB hard particles

Abstract: Abstract The paper presents results of research of the essential characteristics of two kinds of advanced coatings applied by HVOF technology. One studied coating: WB-WC-Co (60-30-10%) contains two types of hard particles (WC and WB), the second coating is eco-friendly alternative to the previously used WC-based coatings, called “green carbides” with the composition WC-FeCrAl (85-15%). In green carbides coating the heavy metals (Co, Ni, NiCr) forming the binding matrix in conventional wear-resistant coatings are replaced by more environmentally friendly matrix based on FeCrAl alloy. On the coatings was carried out: metallographic analysis, measurement of thickness, micro-hardness, adhesion, resistance to thermal cyclic loading and adhesive wear resistance (pin-on-disk test). One thermal cycle consisted of heating the coatings to 600°C, dwell for 10 minutes, and subsequently cooling on the still air. The number of thermal cycles: 10. The base material was stainless steel AISI 316L, pretreatment prior to application of the coating: blasting with white corundum, application device JP-5000.

Laser shock waves as a tool of changing the strains in materials

Abstract: The possibility of defect structure and, consequently, strains control using nanosecond laser irradiation-induced shock waves (LSW) both in bulk materials and at the interfaces is investigated. The conditions of the experiment are selected to ensure that the main result of the LSW action would be a change of defect structure at a significantly larger depth in comparison with a thermal influence region. The influence of weak LSW on Fe-Mo and Si–SiO2 interfaces is considered. The potentiality of this technique with respect to the structural quality and residual strains of (Hg, Cd)Te solid solutions due to the LSW interaction with extended defects (low-grain-boundaries, precipitates, etc.) is demonstrated.

Investigation of the Energy Consumption on Performance of Handling Operations Taking Into Account Parameters of the Grasping System

Abstract: In this article the research of process of transportation of an object of manipulation on a rectilinear trajectory with optimization of Bernoulli gripping device orientation at different parameters of grasping system was made. Here offered dependence for calculation of coordinates of the center of masses of grasping system and its moment of inertia. Graphic dependences of influence of mass of the “extender-gripper-object” system on total motor power and total motor energy are shown. The energy efficiency of handling operations for different parameters of grasping system and the mass of an object of manipulation was investigated.